"After his evidence, the sensation of the day occurred. A tall, dark-haired man, with the word 'City' written metaphorically all over him, had kissed the book, and was waiting to tell the truth, and nothing but the truth.
"He gave his name as Andrew Campbell, head of the firm of Campbell & Co., brokers, of Throgmorton Street.
"In the afternoon of March 18th Mr. Campbell, travelling on the Underground Railway, had noticed a very pretty woman in the same carriage as himself. She had asked him if she was in the right train for Aldersgate. Mr. Campbell replied in the affirmative, and then buried himself in the Stock Exchange quotations of his evening paper.
"At Gower Street, a gentleman in a tweed suit and bowler hat got into the carriage, and took a seat opposite the lady.
"She seemed very much astonished at seeing him, but Mr. Andrew Campbell did not recollect the exact words she said.
"The two talked to one another a good deal, and certainly the lady appeared animated and cheerful. Witness took no notice of them; he was very much engrossed in some calculations, and finally got out at Farringdon Street. He noticed that the man in the tweed suit also got out close behind him, having shaken hands with the lady, and said in a pleasant way: 'Au revoir! Don't be late to-night.' Mr. Campbell did not hear the lady's reply, and soon lost sight of the man in the crowd.
"Every one was on tenter-hooks, and eagerly waiting for the palpitating moment when witness would describe and identify the man who last had seen and spoken to the unfortunate woman, within five minutes probably of her strange and unaccountable death.
"Personally I knew what was coming before the Scotch stockbroker spoke.
"I could have jotted down the graphic and lifelike description he would give of a probable murderer. It would have fitted equally well the man who sat and had luncheon at this table just now; it would certainly have described five out of every ten young Englishmen you know.
"The individual was of medium height, he wore a moustache which was not very fair nor yet very dark, his hair was between colours. He wore a bowler hat, and a tweed suit—and—and—that was all—Mr. Campbell might perhaps know him again, but then again, he might not—he was not paying much attention—the gentleman was sitting on the same side of the carriage as himself—and he had his hat on all the time. He himself was busy with his newspaper—yes—he might know him again—but he really could not say.